Liam Conlon was elected Labour MP for Beckenham and Penge on 4 July 2024 with a majority of 12,905 (24.7 percent), becoming the first Labour MP to represent a constituency entirely within the London Borough of Bromley. He was appointed Parliamentary Private Secretary to the Secretary of State for Transport within weeks of entering Parliament. His mother is Sue Gray.

Born Liam Joseph Conlon in March 1988, he grew up in Tottenham, North London. His father, William (Bill) Conlon, is from County Down, Northern Ireland. His mother, Sue Gray, was the senior civil servant who investigated Partygate, who then left the civil service to become Keir Starmer's Chief of Staff in Number 10 at a salary of £170,000, who resigned from that role on 6 October 2024 amid internal friction and controversy over her pay, who was offered an envoy role she subsequently declined, and who was elevated to the House of Lords as Baroness Gray. On a transparency platform it is the first thing that should be stated.

Conlon's professional career before Parliament included strategy consulting in retail and other sectors, followed by a role as Head of International Operations at Discovery Education UK, an educational technology company. He was elected Chair of the Labour Party Irish Society in 2019 and remains its patron. His Irish heritage through his father is a genuine part of his political identity and informs his parliamentary work on Anglo-Irish issues.

As PPS to the Department for Transport, he initially served under Louise Haigh and then, following Haigh's resignation, under Heidi Alexander. He has sat on the Bus Services (No. 2) Bill Committee since June 2025. He introduced the Mother and Baby Institutions Payment Scheme Bill, known informally as "Philomena's Law," addressing injustices faced by women in Irish mother and baby homes. He voted against the Terminally Ill Adults (End of Life) Bill across its stages, stating there were "not enough protections, especially for vulnerable and disabled people." Beyond that conscience vote, he has voted in more than 400 divisions consistently with his party.

The 12,905 majority is one of the largest among the 2024 intake and reflects Bromley's dramatic political shift rather than personal incumbency advantage. Beckenham and Penge was created from parts of the old Beckenham (Conservative since the 1950s) and Lewisham West and Penge constituencies.

Conlon's strengths include a massive majority providing electoral security, a PPS appointment indicating leadership trust, genuine policy specialism on Anglo-Irish issues through the Irish Society chairmanship and Philomena's Law, a technology sector background, and active parliamentary engagement. His weaknesses are dominated by the Sue Gray question. The son of the Prime Minister's Chief of Staff was elected to Parliament and appointed to a government-facing role within the same month his mother took the most powerful unelected position in Downing Street. Whether that proximity to power reflects merit, connection, or both, it is a question a transparency platform cannot avoid asking. Beyond that, his national profile is limited, he holds no committee chairmanship, and his PPS role constrains his ability to speak independently on policy.